Site_Visit_Report_Lassen_Volcanic_Park_Fire_Cleanup_Phase_I_REVISED_03-30-2023.pdf

PDF 17 MB Posted May 6, 2024

Attached to: Removal of Hazardous Ash and Debris, Lassen VNP
Solicitation number: 140P8424Q0057
Issued by: Department of the Interior National Park Service Pacific West Region

About this file

Written by GovTribe AI · May 6, 2024

This document is a Site Visit Report for a federal contract opportunity related to the removal of hazardous ash and debris at the Drakesbad water tank site in Lassen Volcanic National Park, California. The National Park Service has a requirement for this work, with a contract value estimated between $25,000 and $100,000. The project is a Total Small Business Set-Aside, with NAICS code 562112 and a size standard of $47 million in annual gross receipts. The Government anticipates awarding a firm-fixed-price purchase order to the responsible quoter whose proposal is most advantageous, price and other factors considered. Quotations must be submitted via email by the date and time specified in the solicitation. The Site Visit Report contains details about the project site and requirements as outlined in the attached specifications.

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http://www.xrfresearchinc.com;		info@xrfresearch.com	Page 1 of 100
9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

Fire Cleanup Project, Lassen Volcanic Park, Phase I Site Visit Report

Address: 38050 Highway 36 E, Mineral, CA 96061 (NPS Headquarter)

Prepared by: XRF Research Inc.

Prepared for: FedVet Construction, Inc

Dates of Visit: October 1 – October 11, 2022

Date of Report March 30, 2023

Field Team: Javier Gonzalez, Senior Industrial Hygienist

Ashley Allison, Industrial Hygienist, CAC 10-6804

Dylan Victor, Industrial Hygienist, CAC 22-7071

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

March 30, 2023

Edgar DeLeon, President, Fedvet Construction

Re: Site Visit Report, Lassen Volcanic Park Fire Cleanup, Phase I

Dear Mr. DeLeon,

The

following

report

summary

field

notes,

data

and

interpretation

from

site

visit

Lassen

Volcanic

National

Park

(LAVO)

that

took

place

between

October

2022

and

October

11,

2022,

for

the

purpose

doing

hazardous

waste

characterization/hazardous

material

survey

number

burn

sites.

The

laboratory

data

from

sampling

organized

the

level

site

and

also

tables

covering

all

the

sites,

with

overall

summary

and

interpretation

results

§V.

If you have any questions regarding these findings, please feel free to contact me at 858- 243-5415.

Regards,

Javier	Gonzalez,	Ph.D.,	President	of	XRF	Research,	Inc.
Senior	Industrial	Hygienist

Ashley Allison, California Certified Asbestos Consultant #10-6804

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TABLE OF CONTENTS

I. Background 4

II. Scope of Work/ Burn Sites Table 6

III. Maps and Schematics 8

IV. Field Notes and Data per Site 10

A/B) Mt. Harkness Fire Lookout and Pit Toilet 10

C) Kelley Cabin at Juniper Lake 23

D) Water Treatment Plant at Drakesbad 31

E/G) Drakesbad Area Boardwalks and Hot Springs Creek Bridge 40

F) Boardwalks, Grassy Swale 51

H) Devil’s Kitchen Boardwalk and Bridge 60

I) Boardwalks, Drake’s Lake Trail 68

J) Boardwalks, Summit Lake 83

V. Waste Characterization Lab Data/Summary of Results 91

VI. ATTACHMENT: Metal Waste Characterization Thresholds 100

VII. ATTACHMENTS: LABORATORY DATA end

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I. Background

This

report

summary

findings

from

site

visit

the

Lassen

Volcanic

National

Park

(LAVO)

intended

characterize

number

burned

structures

impacted

the

2021

Dixie

Fire

determine

requirements

for

cleanup

efforts.

The

Dixie

Fire

started

July

13,

2021,

Feather

River

Canyon

southeast

Lassen

Volcanic

National

Park.

The

fire

entered

the

southeast

corner

the

park

near

Juniper

Lake

August

2021.

The

Dixie

Fire

reached

its

final

size

73,240

acres

within

the

park

September

30.

October

26,

the

Dixie

Fire

reached

100%

containment

with

total

size

963,309

acres

making

the

largest

single

fire

California

history.

The

final

Dixie

Fire

footprint

within

the

park

measures

73,240

acres

approximately

the

entire

Dixie

Fire

footprint.

This

report

part

pre-work

assessment

work/health

hazards

that

will

used

direct

site

cleanup

and

soil

remediation

efforts.

The

purpose

document

site

conditions

and

accessibility,

estimate

the

quantities

wastes

present

each

burned

structure

site,

and

characterize

the

waste

materials

for

disposal

purposes.

The

specifications

for

this

work

can

found

the

document

entitled

“140P8422Q0158

Attachment

–

Statement

Work

(“SOW”):

Hazard

Assessment

and

Soil

Remediation”.

listing

the

burn

sites

shown

below

(§II,

Table

II-1).

Maps

the

area

with

the

burn

site

locations

are

shown

below

(§III,

Figures

III-1-3).

Industrial

hygienists

traveled

each

the

burn

sites

foot,

and

collected

samples

ash

and

soil

from

each

after

doing

visual

assessment.

The

purpose

sampling

was

characterize

the

material

the

ash

footprint

determine

its

hazardous

waste

status

once

removed,

and

also

determine

the

presence

and

level

contaminants.

The

investigation

did

not

include

asbestos

survey,

per

client

specification.

Personal

protective

equipment

(PPE)

was

used

when

entering

the

ash

footprints,

consisting

safety

boots

(with

metal-lined

toe

shields

and

soles,

shanks),

half-mask

respirators,

hard

hats,

Tyvek-type

suits,

and

gloves.

The

tools

were

decontaminated

and

the

PPE

removed

and

bagged

for

disposal

the

ash

footprint

boundary,

and

the

waste

PPE

consumables

removed

from

the

park.

Ash

footprints

were

found

covered

with

tarps

which

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were temporarily removed during the sampling then replaced when the sampling was completed.

The

number

composite

samples

and

sampling

procedure

(ISM,

incremental

sampling

method)

were

defined

the

SOW

and

summarized

Table

II-1.

The

top

3”

ash

were

taken

for

each

sample,

with

the

exception

the

Water

Treatment

Plant

Drakesbad

and

Kelly

Cabin

Juniper

Lake

that

involved

6”

ash

mixed

with

the

soil

beneath

it.

The

volume

for

each

sample

was

fluid

ounces.

The

samples

were

placed

insulated

cooler

immediately

upon

collection

and

maintained

cold

(0-5

°C)

with

ice

insulated

coolers/containers

all

times

until

delivery

the

laboratory

part

the

protocol

prevent

evaporation

volatile

components

such

TPH

(total

petroleum

hydrocarbons)

and

mercury.

The

samples

were

delivered

under

chain-of-custody

procedures

courier

direct

delivery

McCampbell

Analytical

Inc.

Pittsburg,

California

with

request

analyze

the

samples

using

the

following

waste

characterization

analytical

methods:

(1) SW-846;

Title

metals

(CAM-17),

The

extraction

was

carried

out

per

SW3050B.

The

analytical

was

carried

out

per

SW6020

(ICP/MS),

which

was

also

used

for

extracts

from

leaching

experiments

(vide

infra).

This

was

followed

with

STLC

(Soluble

Threshold

Limit

Concentration,

for

California),

and

TCLP

(Toxicity

Characteristics

Leaching

procedure

–

Federal

RCRA

[Resource

Conservation

and

Recovery

Act],

Extraction

method

SW1311/SW3010)

cases

when

the

TTLC

levels

reached

the

STLC

and

TCLP

triggers

(See

§VI

ATTACHMENT

–

Waste

Characterization

Thresholds).

(2) Total	mercury	by	SW-846,	method	7471B	(cold	vapor	atomic	absorption)
(3) Dioxins	by	EPA	Method	8290
(4) Asbestos	by	CARB435	(California	Air	Resources	Board),	Level	A,	400	point	count,

0.25%	reporting	limit.
(5) Total	Petroleum	Hydrocarbons	(TPH)	by	Extraction	method	SW5035	and

Analytical method SW8021B/8015Bm

The

field

notes,

schematics

with

composite

sample

locations

and

summary

laboratory

results

for

each

site

can

found

§IV

below,

with

general

summary

for

all

the

sites

§V.

The

laboratory

data

(lab

reports)

can

found

§VII

(ATTACHMENT).

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

II. Scope of Work/ Burn Sites Table

Table II-1. Sampling Plan for Lassen Burn sites

Site

Structure Est Area (ft2)Ω

Waste* Back-ground*¶ Confirm*†

A Fire Lookout – Mt.

Harkness	578	3	Interior,	3
Exterior	3	3

B§

Pit	Toilet	–	Mt.
Harkness§	68	1	1	1

C Kelley Cabin Juniper

Lake 2,000 3 3 3

Drakesbad	Water
Treatment	Plant	150	3	3	3

E Drakesbad Boardwalks 615 2 (10)ß 3 (10) 3(10)

F Boardwalks – Grassy

Swale 174 2 (10) 2 (10) 2 (10)

G Hot Springs Creek

Bridge 264 1 (10) 3 (10) 3 (10)

H Devil’s Kitchen

Boardwalks & Bridge 528 3 (10) 3 (10) 3

I Boardwalks – Drake’s

Lake Trail 386 3 (10) 3 (10) 3

J Boardwalks - Summit

Lake 302 1 (10) 1 (10) 1

*Laboratory Composite Samples

ΩThe

square

footage

has

been

adjusted

some

cases

from

that

the

original

scope

work

document

reflect

what

observed.

¶Collected during Phase I visit and maintained refrigerated if needed for Phase II cleanup

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†Phase II only (to be collected near completion of site cleanup)

§The

pit

toilet

proximity

the

fire

lookout

structure

(approximately

feet

Southeast

the

lookout

strcture)

ßTen (10) incremental samples each

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III. Maps and Schematics

The following three figures show the approximate locations of the ten sites listed above.

Note: See the individual site sections (Section IV) for All-Trails maps for each site.

Figure III-1. Mt. Harkness/Juniper Lake Sites

Figure III-2. Drakesbad/ Warner Valley Area Sites

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

Figure III-3. Boardwalks at Summit Lake and Grassy Swale

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

IV. Field Notes and Lab Data per Site

A/B) Mt. Harkness Fire Lookout and Pit Toilet

A) Fire Lookout Mt. Harkness

Date of site assessment: October 5, 2022

Approximate Coordinates: 40.431189, -121.301612

Accessibility:

The

site

required

hike

(1.5

hours)

from

trailhead

that

between

the

Juniper

Lake

Ranger

Station

and

Mt.

Harkness.

The

ranger

station

accessed

car

from

Chester

via

Chester-Juniper

Lake

Road,

dirt

road

good

condition.

There

another

dirt

road

from

the

area

the

ranger

station

that

goes

the

Mt.

Harkness

trailhead.

The

site,

including

the

pit

toilet,

located

designated

wilderness

area.

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

The

site

consisted

the

stone

base

ruins

(15’

15’)

the

lookout

tower,

which

had

been

boarded

prevent

access.

The

boards

were

removed,

and

then

replaced

upon

completion

the

evaluation.

Trail Map, Mt. Harkness

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Notes and Comments (A. Mt. Harkness Lookout):

• The

floor

plans

showing

overview

the

site

and

sampling

locations

are

shown

Figure

and

Figure

A2,

respectively.

• A	lead-acid	battery	was	observed	in	degraded	condition	inside	the	footprint	(Photo
A1,	below).

• Square	containers	(plastic	containers	inside	of	cardboard	boxes)	of	an	unlabeled
liquid	were	observed	in	the	Southwest	interior	corner	of	the	footprint.	Per
communication	from	a	ranger	(Michelle),	these	are	drinking	water.

• A

pit

toilet

was

located

the

Northwest

corner

the

interior.

• A

cistern

(round

concrete

platform)

was

observed

North

the

lookout

but

did

not

appear	to	have	been	damaged	and	was	not	investigated	further.
• Window	putty	fragments,	a	suspect	asbestos	material,	were	observed	throughout

the footprint and around the exterior perimeter.

Waste Characterization Data and Results (A. Mt. Harkness Lookout-Tables Below):

• California Hazardous Waste for Lead and Copper (Interior)

Maximum Observed Levels of Other Contaminants (Interior and Exterior):

• Hg	(Cold	Vapor	AA)	0.40	ppm
• Dioxins	2,020	ppt	TEQ	(above	recommended	CA	remediation	goals:	See	§V)
• Asbestos	<0.25%
• TPH:	36	ppm	gasoline,	15	ppm	diesel,	<100	ppm	motor	oil

WAI-1 (Mt. Harkness Lookout Interior 1/3 - Metals)

Analytes TTLC Result* STLC† TCLP†

CALIFORNIA

HAZ?

RCRA

HAZ?

Antimony	380			N/A		N/A
Arsenic	11	N/A	N/A	NO	NO
Barium	4,400	20	2.5	NO	NO
Beryllium	<0.5	N/A	N/A	NO	N/A
Cadmium	10			N/A		NO

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Chromium	48	N/A	N/A	NO	NO
Cobalt	40	N/A	N/A	NO	N/A
Copper	9,000	60	N/A	YES	(1)	N/A
Lead	1,400	760	2.5	YES	(1)	NO

Mercury	<0.05	N/A	N/A	NO	NO
Molybdenum	1.8	N/A	N/A	NO	N/A

Nickel	240	1.1	N/A	NO	N/A
Selenium	<0.5	N/A	N/A	NO	NO
Silver	2.9	N/A	N/A	NO	NO

Thallium	<0.5	N/A	N/A	NO	N/A
Vanadium	38	N/A	N/A	NO	N/A
Zinc	2,700	120	N/A	NO	N/A

WAI-2 (Mt. Harkness Lookout Interior 2/3)

Analytes TTLC Result* STLC† TCLP†

CALIFORNIA

HAZ?

RCRA

HAZ?

Antimony	31	N/A	N/A	NO	N/A
Arsenic	43	N/A	N/A	NO	NO
Barium	830	N/A	N/A	NO	NO
Beryllium	<0.5	N/A	N/A	NO	N/A
Cadmium	14			N/A		NO
Chromium	46	N/A	N/A	NO	NO
Cobalt	5.9	N/A	N/A	NO	N/A
Copper	2,300	74	N/A	YES	(2)	N/A
Lead	340	3.1	<0.10	NO	NO

Mercury	<0.05	N/A	N/A	NO	NO
Molybdenum	0.61	N/A	N/A	NO	N/A

Nickel	32	N/A	N/A	NO	N/A
Selenium	<0.5	N/A	N/A	NO	NO

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Silver	1.3	N/A	N/A	NO	NO
Thallium	<0.5	N/A	N/A	NO	N/A
Vanadium	5.9	N/A	N/A	NO	N/A
Zinc	1800	N/A	N/A	NO	N/A

WAI-3 (Mt. Harkness Lookout Interior 3/3)

Analytes TTLC Result* STLC† TCLP†

CALIFORNIA

HAZ?

RCRA

HAZ?

Antimony	14	N/A	N/A	NO	N/A
Arsenic	5.8	N/A	N/A	NO	NO
Barium	2,000	64	5.9	NO	NO
Beryllium	<0.5	N/A	N/A	NO	N/A
Cadmium	5.4	N/A	N/A	NO	NO
Chromium	25	N/A	N/A	NO	NO
Cobalt	6.6	N/A	N/A	NO	N/A
Copper	530	63	N/A	YES	(3)	N/A
Lead	400	23	<0.10	YES	(3)	NO

Mercury	<0.05	N/A	N/A	NO	NO
Molybdenum	0.66	N/A	N/A	NO	N/A

Nickel	21	N/A	N/A	NO	N/A
Selenium	<0.5	N/A	N/A	NO	NO
Silver	<0.5	N/A	N/A	NO	NO

Thallium	<0.5	N/A	N/A	NO	N/A
Vanadium	7.1	N/A	N/A	NO	N/A
Zinc	1,000	N/A	N/A	NO	N/A

*	PPM	or	mg/Kg;	†	mg/L
(1)	Lead	and	Copper	–	TTLC	and	STLC
(2)	Copper	–STLC
(3)	Lead	and	Copper	-STLC

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WAE-1 (Mt. Harkness Lookout Exterior 1/3)

Analytes TTLC Result* STLC† TCLP†

CALIFORNIA

HAZ?

RCRA

HAZ?

Antimony	9.8	N/A	N/A	NO	N/A
Arsenic	6.3	N/A	N/A	NO	NO
Barium	490	N/A	N/A	NO	NO
Beryllium	<0.5	N/A	N/A	NO	N/A
Cadmium	3.7	N/A	N/A	NO	NO
Chromium	43	N/A	N/A	NO	NO
Cobalt	17	N/A	N/A	NO	N/A
Copper	320	3.4	N/A	NO	N/A
Lead	410	2.0	<0.10	NO	NO

Mercury	0.19	N/A	N/A	NO	NO
Molybdenum	1.5	N/A	N/A	NO	N/A

Nickel	47	N/A	N/A	NO	N/A
Selenium	<0.5	N/A	N/A	NO	NO
Silver	<0.5	N/A	N/A	NO	NO

Thallium	<0.5	N/A	N/A	NO	N/A
Vanadium	61	N/A	N/A	NO	N/A
Zinc	850	N/A	N/A	NO	N/A

WAE-2 (Mt. Harkness Lookout Exterior 2/3)

Analytes TTLC Result* STLC† TCLP†

CALIFORNIA

HAZ?

RCRA

HAZ?

Antimony	3.1	N/A	N/A	NO	N/A
Arsenic	5.6	N/A	N/A	NO	NO
Barium	600	N/A	N/A	NO	NO
Beryllium	<0.5	N/A	N/A	NO	N/A
Cadmium	1.5			N/A		NO

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Chromium	31	N/A	N/A	NO	NO
Cobalt	13	N/A	N/A	NO	N/A
Copper	350	4.3	N/A	NO	N/A
Lead	440	1.3	<0.10	NO	NO

Mercury	<0.050	N/A	N/A	NO	NO
Molybdenum	1.6	N/A	N/A	NO	N/A

Nickel	38	N/A	N/A	NO	N/A
Selenium	<0.5	N/A	N/A	NO	NO
Silver	<0.5	N/A	N/A	NO	NO

Thallium	<0.5	N/A	N/A	NO	N/A
Vanadium	62	N/A	N/A	NO	N/A
Zinc	540	N/A	N/A	NO	N/A

WAE-3 (Mt. Harkness Lookout Exterior 3/3)

Analytes TTLC Result* STLC† TCLP†

CALIFORNIA

HAZ?

RCRA

HAZ?

Antimony	11	N/A	N/A	NO	N/A
Arsenic	4.8	N/A	N/A	NO	NO
Barium	710	N/A	N/A	NO	NO
Beryllium	<0.5	N/A	N/A	NO	N/A
Cadmium	3	N/A	N/A	NO	NO
Chromium	29	N/A	N/A	NO	NO
Cobalt	14	N/A	N/A	NO	N/A
Copper	890	7.1	N/A	NO	N/A
Lead	390	0.82	0.18	NO	NO

Mercury	0.16	N/A	N/A	NO	NO
Molybdenum	1.1	N/A	N/A	NO	N/A

Nickel	37	N/A	N/A	NO	N/A
Selenium	<0.5	N/A	N/A	NO	NO

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

Silver	0.71	N/A	N/A	NO	NO
Thallium	<0.5	N/A	N/A	NO	N/A
Vanadium	64	N/A	N/A	NO	N/A
Zinc	900	N/A	N/A	NO	N/A

* PPM or mg/Kg; † mg/L

Figure A1. Mt. Harkness site dimensions and hazardous material locations

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

Figure A2. Composite sampling locations of the Mt. Harkness (A. lookout & B. pit toilet) site

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

Photo A1. The photo below shows the burned lead acid battery inside the footprint.

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

B) Mt. Harkness Pit Toilet

Date of site assessment: October 5, 2022

Approximate Coordinates: 40.430948, -121.301381

Accessibility:

The

structure

approximately

feet

Southeast

the

lookout

tower,

near

the

summit

Mt.

Harkness.

Notes and Comments:

• The

interior

was

covered

with

white

ash-like

material

(Photo

B1,

below).

• No

sub-grade

void

vault

was

apparent.

• See

the

Mt.

Harkness

lookout

section

(vide

supra)

for

the

floorplan,

trail

map,

etc.

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

Waste Characterization Data (B. Mt. Harkness Pit Toilet):

• California Hazardous Waste for Lead

Maximum Observed Levels of Other Contaminants (Mt. Harkness Pit Toilet):

• Hg	(Cold	Vapor	AA)	0.026	ppm
• Dioxins	2.13	ppt	TEQ
• Asbestos	<0.25%
• TPH:	6.7	ppm	gasoline,	<20	ppm	diesel,	<100	ppm	motor	oil

WB (Mt. Harkness Pit Toilet)

Analytes TTLC Result* STLC** TCLP**

CALIFORNIA

HAZ?

RCRA

HAZ?

Antimony	5.7	N/A	N/A	NO	N/A
Arsenic	2.8	N/A	N/A	NO	NO
Barium	240	N/A	N/A	NO	NO
Beryllium	<0.5	N/A	N/A	NO	N/A
Cadmium	1.1	N/A	N/A	NO	NO
Chromium	19	N/A	N/A	NO	NO
Cobalt	9.7	N/A	N/A	NO	N/A
Copper	35	N/A	N/A	NO	N/A
Lead	340	15	<0.10	YES	(1)	NO

Mercury	<0.050	N/A	N/A	NO	NO
Molybdenum	1.3	N/A	N/A	NO	N/A

Nickel	28	N/A	N/A	NO	N/A
Selenium	<0.50	N/A	N/A	NO	NO
Silver	<0.50	N/A	N/A	NO	NO

Thallium	<0.50	N/A	N/A	NO	N/A
Vanadium	47	N/A	N/A	NO	N/A
Zinc	990	N/A	N/A	NO	N/A

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

*	PPM	or	mg/Kg
†	mg/L
(1)	Lead	–	STLC

Photo B1. The photo below shows the interior of the pit toilet.

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

C) Kelley Cabin at Juniper Lake

Date of site assessment: October 3, 2022

Approximate Coordinates: 40.462861, -121.311944

Accessibility:

The

site

was

accessed

car

from

Chester

via

Chester-Juniper

Lake

Road,

dirt

road

good

condition.

Parking

available

adjacent

worksite.

The

site

not

designated

wilderness.

Notes and Comments:

• The

floor

plans

showing

overview

the

site

and

sampling

plan

are

shown

Figure

and

Figure

C2,

respectively.

• The

site

(ash

footprint)

was

covered

with

tarp

that

was

removed

carry

out

the

waste

characterization,

then

replaced

(Photo

C1,

below).

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

• Suspect	asbestos	materials	observed	included	numerous	fragments	of	window	putty
(around	perimeter),	along	with	heat	shield	fragments	and	vinyl	flooring,	all	burned
(Photo	C2,	below).

• A

propane

tank

was

observed

but

had

been

opened/vented

(See

Figure

C2).

• A

pit

was

observed

the

ground,

covered

with

metal

frame,

Northwest

main

footprint.

This

probably

latrine.

• This

was

wooded

area

with

some

burned

trees

that

could

present

hazard

from

falling branches by driveway.

Waste Characterization Data (B. Kelley Cabin at Juniper Lake – Tables Below):

• California Hazardous Waste for Lead

Maximum Observed Levels of Other Contaminants (Kelley Cabin):

• Hg	(Cold	Vapor	AA)	0.020	ppm
• Dioxins	57.8	ppt	TEQ	(above	recommended	CA	remediation	goals:	See	§V)
• Asbestos	<0.25%
• TPH:	6.3	ppm	gasoline,	3.9	ppm	diesel,	<10	ppm	motor	oil

WC-1 (Kelley Cabin - Juniper Lake 1/3)

Analytes TTLC Result* STLC† TCLP†

CALIFORNIA

HAZ?

RCRA

HAZ?

Antimony	1.3	N/A	N/A	NO	N/A
Arsenic	45	N/A	N/A	NO	NO
Barium	480	N/A	N/A	NO	NO
Beryllium	<0.5	N/A	N/A	NO	N/A
Cadmium	<0.5	N/A	N/A	NO	NO
Chromium	44	N/A	N/A	NO	NO
Cobalt	11	N/A	N/A	NO	N/A
Copper	430	0.98	N/A	NO	N/A
Lead	120	5.6	<0.10	YES	(1)	NO

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

Mercury	<0.017	N/A	N/A	NO	NO
Molybdenum	0.56	N/A	N/A	NO	N/A

Nickel	56	N/A	N/A	NO	N/A
Selenium	<0.5	N/A	N/A	NO	NO
Silver	<0.5	N/A	N/A	NO	NO

Thallium	<0.5	N/A	N/A	NO	N/A
Vanadium	54	N/A	N/A	NO	N/A
Zinc	510	N/A	N/A	NO	N/A

WC-2 (Kelley Cabin - Juniper Lake 2/3)

Analytes TTLC Result* STLC† TCLP†

CALIFORNIA

HAZ?

RCRA

HAZ?

Antimony	2.2	N/A	N/A	NO	N/A
Arsenic	59	2.9	N/A	NO	NO
Barium	220	N/A	N/A	NO	NO
Beryllium	<0.5	N/A	N/A	NO	N/A
Cadmium	0.91	N/A	N/A	NO	NO
Chromium	39	N/A	N/A	NO	NO
Cobalt	9.7	N/A	N/A	NO	N/A
Copper	820	5.2	N/A	NO	N/A
Lead	140	4.5	0.34	NO	NO

Mercury	0.02	N/A	N/A	NO	NO
Molybdenum	0.69	N/A	N/A	NO	N/A

Nickel	51	N/A	N/A	NO	N/A
Selenium	<0.5	N/A	N/A	NO	NO
Silver	<0.5	N/A	N/A	NO	NO

Thallium	<0.5	N/A	N/A	NO	N/A
Vanadium	60	N/A	N/A	NO	N/A
Zinc	1300	N/A	N/A	NO	N/A

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

WC-3 (Kelley Cabin - Juniper Lake 3/3)

Analytes TTLC Result* STLC† TCLP†

CALIFORNIA

HAZ?

RCRA

HAZ?

Antimony	1.5	N/A	N/A	NO	N/A
Arsenic	60	2.2	N/A	NO	NO
Barium	69	N/A	N/A	NO	NO
Beryllium	<0.5	N/A	N/A	NO	N/A
Cadmium	<0.5	N/A	N/A	NO	NO
Chromium	39	N/A	N/A	NO	NO
Cobalt	6.9	N/A	N/A	NO	N/A
Copper	42	N/A	N/A	NO	N/A
Lead	39	N/A	N/A	NO	NO

Mercury	<0.017	N/A	N/A	NO	NO
Molybdenum	<0.5	N/A	N/A	NO	N/A

Nickel	40	N/A	N/A	NO	N/A
Selenium	<0.5	N/A	N/A	NO	NO
Silver	<0.5	N/A	N/A	NO	NO

Thallium	<0.5	N/A	N/A	NO	N/A
Vanadium	39	N/A	N/A	NO	N/A
Zinc	210	N/A	N/A	NO	N/A

*	PPM	or	mg/Kg
†	mg/L
(1)	Lead	-	STLC

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

Figure C1. Kelley Cabin dimensions and hazardous material locations.

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

Figure C2. Composite sampling locations of the Kelley Cabin worksite

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

Photo

C1.

The

photo

below

shows

overview

the

site

including

the

metal

roofing,

concrete

footings,

and

the

propane

tank.

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

Photo

C2.

The

photos

below

shows

the

suspect

asbestos

fragments,

white

window

putty

and

red

vinyl

flooring

(top)

and

beige

heat

shield

(bottom).

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

D) Water Treatment Plant at Drakesbad

Date of site assessment: October 2, 2022

Approximate Coordinates: 40.445209, -121.409165

Accessibility:

The

site

was

accessed

car.

can

found

right

the

end

the

road

the

Chester

–

Warner

Valley

Road,

dirt

road

good

condition.

This

was

the

last

structure

traveling

West

after

passing

the

other

structures

(lodge,

cabins

and

boardwalk)

Drakesbad.

Parking

available

adjacent

worksite,

although

may

somewhat

difficult

for

large

vehicle

turn

around.

The

site

not

designated

wilderness

area.

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

Notes and Comments:

• The

floor

plans

showing

overview

the

site

and

sampling

locations

are

shown

Figure

D1-D3

below.

• The

site

(ash

footprint)

was

covered

with

tarp

that

was

removed

carry

out

the

waste

characterization,

then

replaced.

• A

large

lead-acid

battery

was

observed

the

footprint

degraded

condition,

with

both

fragments

lead

and

lead

oxide

particulate

form

mixed

into

the

ash

footprint

(East

part

–

Photo

D1,

below).

• Fragments	of	suspect	asbestos-containing	material	(a	gasket)	were	observed	in	the
Southwest	part	of	the	footprint.

• The

site

was

found

wet,

with

the

ash

the

burn

footprint

being

the

form

mud

sludge.

The

area

appears

watershed.

• A

plastic

pipe

had

been

installed

divert

spring

water

into

larger

cast

iron

overflow

pipe

that

traveled

down

the

mountainside.

However,

the

large

pipe

was

overflowing,

possibly

due

clog

lower

elevation.

This

plastic

pipe

was

draped

over

the

footprint

and

may

have

moved

access

the

site

during

cleanup

operations

(Photo

D2).

• A

recommendation

was

submitted

the

NPS

use

barriers

prevent

flow

contaminated

material

(sludge)

from

the

worksite.

• Sampling

was

performed

from

ash

top

the

main

concrete

foundation

well

ash

and

soil

from

the

areas

around

the

foundation.

Waste Characterization Data and Results (D. Drakesbad Water T.P.-Tables Below):

• California	Hazardous	Waste	for	Lead	and	Antimony
• Federally	Hazardous	(RCRA)	Waste	for	Lead

Maximum Observed Levels of Other Contaminants:

• Hg

(Cold

Vapor

AA)

0.069

ppm

• Dioxins

894

ppt

TEQ

(above

recommended

remediation

goals:

See

§V)

• Asbestos

<0.25%

• TPH:

6.6

ppm

gasoline,

180

ppm

diesel,

530

ppm

motor

oil

(above

Tier

SSL,

See

§V)

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

WD-1 (Drakesbad Water Treatment Plant 1/3)

Analytes TTLC Result* STLC** TCLP**

CALIFORNIA

HAZ?

RCRA

HAZ?

Antimony	1,300	-	N/A	YES	(1)	N/A
Arsenic	5.4	N/A	N/A	NO	NO
Barium	650	N/A	N/A	NO	NO
Beryllium	<0.5	N/A	N/A	NO	N/A
Cadmium	<0.5	N/A	N/A	NO	NO
Chromium	35	N/A	N/A	NO	NO
Cobalt	5.3	N/A	N/A	NO	N/A
Copper	240	N/A	N/A	NO	N/A
Lead	3,000	0.88	<0.10	YES	(1)		NO

Mercury	0.043	N/A	N/A	NO	NO
Molybdenum	3.9	N/A	N/A	NO	N/A

Nickel	66	N/A	N/A	NO	N/A
Selenium	<0.5	N/A	N/A	NO	NO
Silver	<0.5	N/A	N/A	NO	NO

Thallium	<0.5	N/A	N/A	NO	N/A
Vanadium	8.4	N/A	N/A	NO	N/A
Zinc	720	N/A	N/A	NO	N/A

WD-2 (Drakesbad Water Treatment Plant 2/3)

Analytes TTLC Result* STLC** TCLP**

CALIFORNIA

HAZ?

RCRA

HAZ?

Antimony	24	N/A	N/A	NO	N/A
Arsenic	1.1	N/A	N/A	NO	NO
Barium	61	N/A	N/A	NO	NO
Beryllium	<0.5	N/A	N/A	NO	N/A
Cadmium	<0.5	N/A	N/A	NO	NO

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

Chromium	20	N/A	N/A	NO	NO
Cobalt	3.4	N/A	N/A	NO	N/A
Copper	55	N/A	N/A	NO	N/A
Lead	310	43	0.48	YES	(2)	NO

Mercury	0.032	N/A	N/A	NO	NO
Molybdenum	2.8	N/A	N/A	NO	N/A

Nickel	6.9	N/A	N/A	NO	N/A
Selenium	<0.5	N/A	N/A	NO	NO
Silver	<0.5	N/A	N/A	NO	NO

Thallium	<0.5	N/A	N/A	NO	N/A
Vanadium	8.1	N/A	N/A	NO	N/A
Zinc	460	N/A	N/A	NO	N/A

WD-3 (Drakesbad Water Treatement Plant 3/3)

Analytes TTLC Result* STLC** TCLP**

CALIFORNIA

HAZ?

RCRA

HAZ?

Antimony	120	N/A	N/A	NO	N/A
Arsenic	8.0	N/A	N/A	NO	NO
Barium	69	N/A	N/A	NO	NO
Beryllium	<0.5	N/A	N/A	NO	N/A
Cadmium	<0.5	N/A	N/A	NO	NO
Chromium	9.8	N/A	N/A	NO	NO
Cobalt	2.1	N/A	N/A	NO	N/A
Copper	720	22	N/A	NO	N/A
Lead	5,400	730	32	YES	(3)	YES	(3)

Mercury	0.069	N/A	N/A	NO	NO
Molybdenum	0.73	N/A	N/A	NO	N/A

Nickel	7.5	N/A	N/A	NO	N/A
Selenium	<0.5	N/A	N/A	NO	NO

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

Silver	<0.5	N/A	N/A	NO	NO
Thallium	<0.5	N/A	N/A	NO	N/A
Vanadium	6.2	N/A	N/A	NO	N/A
Zinc	640	N/A	N/A	NO	N/A

PPM

mg/Kg;

†

mg/L

(1)

Lead

and

Antimony

–

TTLC;

(2)

Lead

–

STLC;

(3)

Lead

–

TTLC,

STLC,

TCLP

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

Figure D1. Drakesbad Water Treatment Plant Dimensions and hazardous material locations

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

Figure

D2.

Floorplan

the

Water

Treatment

plant

worksite

and

locations

background

soil

samples.

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

Figure D3. Composite sampling locations of the Drakesbad WT plant worksite

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

Photo

D1.

The

photo

below

shows

the

large

lead

acid

battery

(in

between

gray

water

pipe

and

workers),

concrete

slab

retaining

wall,

and

the

wet

muddy

conditions

the

footprint.

Photo

D2.

The

photo

below

shows

the

new

plastic

water

line

flowing

into

the

old

metal

water

line.

The

latter

was

found

backed

and

overflowing.

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

E/G) Drakesbad Area Boardwalks and Hot Springs Creek Bridge

E. Drakesbad Area Boardwalks

Date of site assessment: October 9, 2022

Approximate Coordinates: 40.443002, -121.396635 (East –L. pic.)

40.442823, -121.399039 (West –R. pic.)

Accessibility:

These

two

boardwalks

can

reached

foot

from

the

Chester

–

Warner

Valley

road,

location

approximately

1500

feet

East

the

Drakesbad

Lodge,

where

the

PCT

(Pacific

Crest

Trail)

runs

parallel

the

road

(approximately

100

feet

South

the

road).

The

East

boardwalk

near

the

road.

The

west

boardwalk

near

the

creek,

before

reaching

the

Hot

Springs

creek

bridge.

The

distance

between

boardwalks

approximately

800

feet

and

the

Hot

Springs

Creek

Bridge

additional

~500

feet

West

the

West

Boardwalk.

These

boardwalks

are

not

designated

wilderness

areas.

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

Trail Map, Drakesbad Area Boardwalks and Hot Springs Creek Bridge

Notes and Comments (E. Drakesbad Area Boardwalks):

• Floor

plans

showing

locations

the

composite

sampling

for

the

East

and

West

boardwalks

are

shown

below

(Figure

and

Figure

E2,

respectively).

•

suspect

materials

were

observed

aside

from

ash

and

charcoal

from

the

burned

suspect

pressure-treated

wood

(See

Photo

and

Photo

E2,

below).

• The

West

boardwalk

area

watershed

and

some

fragments

the

ash

appear

have

been

swept

flowing

water

the

direction

the

creek,

based

the

relatively

small

amount

ash/burn

debris

remaining

(Photo

E2).

Fragments

were

found

one

foot

South

(towards

the

creek)

the

apparent

burn

perimeter.

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

• Chemical

analysis

the

ash

(vide

infra)

suggests

that

the

West

boardwalk

was

probably

constructed

from

CCA

(Chromate-Copper-Arsenate)-pressure

treated

wood,

but

the

East

boardwalk

and

bridge

may

have

been

formulation

without

arsenic,

such

the

copper

naphthenate,

azole,

quaternary

ammonium

types.

• The ash samples were relatively wet.

Waste Characterization Data and Results (E. Drakesbad Boardwalks-Tables Below):

• California	Hazardous	Waste	for	Arsenic	and	Copper	(West)
• California	Hazardous	Waste	for	Copper	(East)

Maximum Observed Levels of Other Contaminants (Drakesbad Boardwalks):

• Hg	(Cold	Vapor	AA)	<0.017	ppm
• Dioxins	0.32	ppt	TEQ
• Asbestos	<0.25%
• TPH:	41	ppm	gasoline,	32	ppm	diesel,	<100	ppm	motor	oil

WEW (Drakesbad Boardwalk - West)

Analytes TTLC Result* STLC† TCLP†

CALIFORNIA

HAZ?

RCRA

HAZ?

Antimony	<5.0	N/A	N/A	NO	N/A
Arsenic	210	7.6	2.7	YES	(1)	NO
Barium	<50	N/A	N/A	NO	NO
Beryllium	<5.0	N/A	N/A	NO	N/A
Cadmium	<5.0	N/A	N/A	NO	NO
Chromium	35	N/A	N/A	NO	NO
Cobalt	<5.0	N/A	N/A	NO	N/A
Copper	1700	80	N/A	YES	(1)	N/A
Lead	<5.0	N/A	N/A	NO	NO

Mercury	<0.5	N/A	N/A	NO	NO
Molybdenum	<5.0	N/A	N/A	NO	N/A

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

Nickel	5	N/A	N/A	NO	N/A
Selenium	<5.0	N/A	N/A	NO	NO
Silver	<5.0	N/A	N/A	NO	NO

Thallium	<5.0	N/A	N/A	NO	N/A
Vanadium	19	N/A	N/A	NO	N/A
Zinc	750	N/A	N/A	NO	N/A

WEE (Drakesbad Boardwalk - East)

Analytes TTLC Result* STLC† TCLP†

CALIFORNIA

HAZ?

RCRA

HAZ?

Antimony	<5.0	N/A	N/A	NO	N/A
Arsenic	<5.0	N/A	N/A	NO	NO
Barium	<50	N/A	N/A	NO	NO
Beryllium	<5.0	N/A	N/A	NO	N/A
Cadmium	<5.0	N/A	N/A	NO	NO
Chromium	<5.0	N/A	N/A	NO	NO
Cobalt	<5.0	N/A	N/A	NO	N/A
Copper	2000	87	N/A	YES	(2)	N/A
Lead	<5.0	N/A	N/A	NO	NO

Mercury	<0.5	N/A	N/A	NO	NO
Molybdenum	<5.0	N/A	N/A	NO	N/A

Nickel	5.4	N/A	N/A	NO	N/A
Selenium	<5.0	N/A	N/A	NO	NO
Silver	<5.0	N/A	N/A	NO	NO

Thallium	<5.0	N/A	N/A	NO	N/A
Vanadium	7.8	N/A	N/A	NO	N/A
Zinc	91	N/A	N/A	NO	N/A

*	PPM	or	mg/Kg;	†	mg/L
(1)	Copper	and	Arsenic	-	STLC
(2)	Copper	-	STLC

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

Figure E1. Composite sampling locations of the Drakesbad East Boardwalk

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

Figure E2. Composite sampling locations of the Drakesbad West Boardwalk

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

Photo E1. The photo below shows the east boardwalk burn footprint.

Photo E2. The photo below shows the west boardwalk burn footprint.

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

G) Hot Springs Creek Bridge

Date of site assessment: October 9, 2022

Approximate Coordinates: 40.442465, -121.400327

Accessibility:

This

bridge

can

reached

foot

from

the

Chester

–

Warner

Valley

road,

location

approximately

1500

feet

East

the

Drakesbad

Lodge,

where

the

PCT

(Pacific

Crest

Trail)

runs

parallel

the

road

(approximately

100

feet

South

the

road).

The

bridge

located

the

PCT

where

crosses

Hot

Springs

Creek,

approximately

800

feet

West

where

the

PCT

comes

near

the

road.

This

bridge

not

located

designated

wilderness

area.

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

Notes and Comments (Hot Springs Creek Bridge):

• The

floorplan

showing

composite

sampling

shown

Figure

G1,

below.

• The

new

bridge

has

already

been

built.

Boards

from

both

the

North

and

South

ends

the

bridge

had

been

removed

allow

access

the

ash

material

that

still

remained

above

the

banks

Hot

Springs

Creek

(Photo

and

Photo

G2,

below).

• The ash samples were relatively dry and contained to the burn area.

Waste Characterization Data/Results (G. Hot Springs Creek Bridge-Tables Below):

• California Hazardous Waste for Copper

Maximum Observed Levels of Other Contaminants (Hot Springs Creek Bridge):

• Hg

(Cold

Vapor

AA)

0.043

ppm

• Dioxins

0.93

ppt

TEQ

• Asbestos

<0.25%

• TPH:

ppm

gasoline,

140

ppm

diesel,

800

ppm

motor

oil

(>Tier

SSL,

See

§V)

WG (Hot Springs Creek Bridge)

Analytes TTLC Result* STLC† TCLP†

CALIFORNIA

HAZ?

RCRA

HAZ?

Antimony	8.6	N/A	N/A	NO	N/A
Arsenic	24	N/A	N/A	NO	NO
Barium	180	N/A	N/A	NO	NO
Beryllium	<5.0	N/A	N/A	NO	N/A
Cadmium	<5.0	N/A	N/A	NO	NO
Chromium	210	<0.10	<0.10	NO	NO
Cobalt	23	N/A	N/A	NO	N/A
Copper	27,000	720	N/A	YES	(1)	N/A
Lead	15	N/A	N/A	NO	NO

Mercury <0.5 N/A N/A NO NO

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

Molybdenum	69	N/A	N/A	NO	N/A
Nickel	250	0.46	N/A	NO	N/A
Selenium	<5.0	N/A	N/A	NO	NO
Silver	<5.0	N/A	N/A	NO	NO

Thallium	<1.0	N/A	N/A	NO	N/A
Vanadium	55	N/A	N/A	NO	N/A
Zinc	110	N/A	N/A	NO	N/A

*	PPM	or	mg/Kg;	†	mg/L
(1)	Copper	–	TTLC	and	STLC

Figure

G1.

Composite

sampling

locations

the

Hot

Springs

Creek

Bridge

(PCT),

showing

dimensions

and

locations

background

sampling.

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

Photo

G1.

The

photo

below

shows

overview

the

bridge

with

the

creek

flowing

from

right

left.

Photo

G2.

The

photo

below

shows

the

ash

left

the

channels

the

metal

bridge

beams

that

were

mostly

covered

new

boards

the

time

inspection.

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

F) Boardwalks, Grassy Swale

Date of site assessment: October 7, 2022

Approximate Coordinates: 40.471526, -121.391191 (North, L. pic.)

40.467018, -121.399728 (South, R. pic.)

Accessibility:

These

boardwalks

can

reached

hiking

from

Summit

Lake

(~4

miles

and

2.5

hours

each

way).

These

boardwalks

are

located

designated

wilderness

area.

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

Trail Map (Boardwalks, Grassy Swale)

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

Notes and Comments (Boardwalks, Grassy Swale):

• The

composite

sampling

locations

for

Grassy

Swale

North

shown

Figure

and

for

Grassy

Swale

South

shown

Figure

F2,

below.

• No	suspect	materials	other	than	ash	from	suspect	pressure	treated	wood	were
observed	(see	Photo	F1	and	Photo	F2,	below).

• Based

the

presence

both

Arsenic

and

Copper

(vide

infra),

the

pressure

treated

wood

appears

the

CCA

(Chromate-Copper-Arsenate)

type.

• The ash material was moist and appeared contained to the footprint.

Waste Characterization Data and Results (F. Boardwalks, Grassy Swale-Tables Below):

• California	Hazardous	Waste	for	Arsenic	and	Copper	(both	North	and	South)
• Federally	Hazardous	(RCRA)	Waste	for	Arsenic	(both	North	and	South)

Maximum Observed Levels of Other Contaminants (Boardwalks, Grassy Swale):

• Hg

(Cold

Vapor

AA)

<0.017

ppm

• Dioxins

0.03

ppt

TEQ

• Asbestos

<0.25%

• TPH:

ppm

gasoline,

230

ppm

diesel,

770

ppm

motor

oil

(above

Tier

SSL,

See

§V)

WFN (Boardwalks, Grassy Swale - North)

Analytes TTLC Result* STLC† TCLP†

CALIFORNIA

HAZ?

RCRA

HAZ?

Antimony	12	N/A	N/A	NO	N/A
Arsenic	1,500	25	6.6	YES	(1)	YES	(1)

Barium	100	N/A	N/A	NO	NO
Beryllium	<5.0	N/A	N/A	NO	N/A
Cadmium	<5.0	N/A	N/A	NO	NO
Chromium	36	N/A	N/A	NO	NO
Cobalt	6	N/A	N/A	NO	N/A

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

Copper	12,000	240	N/A	YES	(1)	N/A
Lead	16	N/A	N/A	NO	NO

Mercury	<0.5	N/A	N/A	NO	NO
Molybdenum	<5.0	N/A	N/A	NO	N/A

Nickel	16	N/A	N/A	NO	N/A
Selenium	<5.0	N/A	N/A	NO	NO
Silver	<5.0	N/A	N/A	NO	NO

Thallium	<5.0	N/A	N/A	NO	N/A
Vanadium	11	N/A	N/A	NO	N/A
Zinc	3,000	84	N/A	NO	N/A

WFS (Boardwalks, Grassy Swale - South)

Analytes TTLC Result* STLC† TCLP†

CALIFORNIA

HAZ?

RCRA

HAZ?

Antimony	<5.0	N/A	N/A	NO	N/A
Arsenic	490	15	6.0	YES	(2)	YES	(2)

Barium	<50	N/A	N/A	NO	NO
Beryllium	<5.0	N/A	N/A	NO	N/A
Cadmium	<5.0	N/A	N/A	NO	NO
Chromium	20	N/A	N/A	NO	NO
Cobalt	<5.0	N/A	N/A	NO	N/A
Copper	3800	140	N/A	YES	(2)	N/A
Lead	<5.0	N/A	N/A	NO	NO

Mercury	<0.5	N/A	N/A	NO	NO
Molybdenum	<5.0	N/A	N/A	NO	N/A

Nickel <5.0 N/A N/A NO N/A

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

Selenium	<5.0	N/A	N/A	NO	NO
Silver	<5.0	N/A	N/A	NO	NO

Thallium	<5.0	N/A	N/A	NO	N/A
Vanadium	<5.0	N/A	N/A	NO	N/A
Zinc	1900	N/A	N/A	NO	N/A

*	PPM	or	mg/Kg;	†	mg/L
(1)	Copper	–	TTLC	and	STLC;	Arsenic	–	TTLC,	STLC	and	TCLP
(2)	Copper	–	TTCL	and	STLC;	Arsenic	–	STLC,	TCLP

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

Figure F1. Composite sampling locations of the Grassy Swales Boardwalk - North

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

Figure F2. Composite sampling locations of the Grassy Swales Boardwalk - South

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

Photo F1. The photo below shows the condition of the burn footprint for the North boardwalk.

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

Photo F2. The photo below shows the condition of the burn footprint for the South boardwalk.

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

H) Devil’s Kitchen Boardwalk and Bridge

Date of site assessment: October 8, 2022

Approximate Coordinates: 40.441442, -121.432645 (bridge)

40.444467, -121.413601 (boardwalk)

Accessibility:

These

sites

require

hike

from

Drakesbad.

Distances

between

the

sites

can

seen

below

the

AllTrails

map.

The

trailhead

approximately

100

feet

West

the

Drakesbad

lodge.

The

boardwalk

approximately

1200

feet

West/Southwest

the

Drakesbad

water

treatement

plant,

where

the

meadows

approach

the

forest.

The

bridge

1.6

miles

from

the

Drakesbad

Devil’s

Kitchen

trailhead.

These

sites

are

located

designated

wilderness.

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

Trail Map (Devil’s Kitchen Boardwalk and Bridge)

Notes and Comments (Devil’s Kitchen Boardwalk and Bridge):

• The	composite	sampling	locations	are	indicated	in	Figure	H1	(Boardwalk)	and
Figure	H2	(Bridge),	below.

• Only

some

fragments

charcoal

and

ash

remain

from

the

bridge.

The

part

that

burned

several

the

planks

and

footing

from

the

East

end

the

bridge.

• The

boardwalk

was

covered

with

tarp

that

was

thinner

material

than

the

other

tarps

Lassen

burn

sites.

This

was

uncovered

for

sampling

and

replaced.

• No	suspect	materials	remain	other	than	ash/charcoal	fragments	of	assumed
pressure-treated	wood	(See	Photo	H1,	Boardwalk	and	Photo	H2,	Bridge,	below).

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

• The

chemical

analysis

suggests

the

pressure-treated

wood

was

predominantly

copper-based

formulation,

such

copper

azole

naphthenate,

owing

the

relative

absence

arsenic

above

background

levels,

the

case

the

boardwalk.

The

data

less

conclusive

the

case

the

bridge

sample.

• The

ash

fragments

were

found

relatively

dry

the

case

the

bridge

and

slightly

moist

the

case

the

boardwalk.

They

were

found

localized

around

the

original

location

the

treated

wood

the

burn

footprint.

Waste	Characterization	Data/Results	(H.	Devil’s	Kitchen	Bridge	and	Boardwalk-
Tables	Below):

• California Hazardous Waste for Copper

Maximum Observed Levels of Other Contaminants (Devil’s Kitchen Bridge and Boardwalk):

• Hg	(Cold	Vapor	AA)	0.60	ppm
• Dioxins	0.65	ppt	TEQ
• Asbestos	<0.25%
• TPH:	14	ppm	gasoline,	56	ppm	diesel,	<200	ppm	motor	oil

WHW (Devil's Kitchen Bridge)

Analytes TTLC Result* STLC† TCLP†

CALIFORNIA

HAZ?

RCRA

HAZ?

Antimony	<0.5	N/A	N/A	NO	N/A
Arsenic	49	N/A	N/A	NO	NO
Barium	15	N/A	N/A	NO	NO
Beryllium	<0.5	N/A	N/A	NO	N/A
Cadmium	<0.5	N/A	N/A	NO	NO
Chromium	2.3	N/A	N/A	NO	NO
Cobalt	<0.5	N/A	N/A	NO	N/A
Copper	380	34	N/A	YES	(1)	N/A

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Lead	<0.5	N/A	N/A	NO	NO
Mercury	0.58	N/A	N/A	NO	NO

Molybdenum	<0.5	N/A	N/A	NO	N/A
Nickel	1.4	N/A	N/A	NO	N/A
Selenium	<0.5	N/A	N/A	NO	NO
Silver	<0.5	N/A	N/A	NO	NO

Thallium	<0.5	N/A	N/A	NO	N/A
Vanadium	0.98	N/A	N/A	NO	N/A
Zinc	160	N/A	N/A	NO	N/A

WHE1 (Devil's Kitchen East -Boardwalk, Sample 1)

Analytes TTLC Result* STLC† TCLP†

CALIFORNIA

HAZ?

RCRA

HAZ?

Antimony	<0.5	N/A	N/A	NO	N/A
Arsenic	3.3	N/A	N/A	NO	NO
Barium	23	N/A	N/A	NO	NO
Beryllium	<0.5	N/A	N/A	NO	N/A
Cadmium	<0.5	N/A	N/A	NO	NO
Chromium	1.2	N/A	N/A	NO	NO
Cobalt	<0.5	N/A	N/A	NO	N/A
Copper	560	190	N/A	YES	(1)	N/A
Lead	0.6	N/A	N/A	NO	NO

Mercury	<0.05	N/A	N/A	NO	NO
Molybdenum	<0.5	N/A	N/A	NO	N/A

Nickel	1.6	N/A	N/A	NO	N/A
Selenium	<0.5	N/A	N/A	NO	NO
Silver	<0.5	N/A	N/A	NO	NO

Thallium <0.5 N/A N/A NO N/A

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9921	Carmel	Mountain	Rd.	#326	San	Diego,	CA	92129	858-442-3230

Vanadium	3.9	N/A	N/A	NO	N/A
Zinc	34	N/A	N/A	NO	N/A

WHE2 (Devil's Kitchen East -Boardwalk, Sample 2)

Analytes TTLC Result* STLC† TCLP†

CALIFORNIA

HAZ?

RCRA

HAZ?

Antimony	<0.5	N/A	N/A	NO	N/A
Arsenic	15	N/A	N/A	NO	NO
Barium	56	N/A	N/A	NO	NO
Beryllium	<0.5	N/A	N/A	NO	N/A
Cadmium	<0.5	N/A	N/A	NO	NO
Chromium	6.5	N/A	N/A	NO	NO
Cobalt	2.3	N/A	N/A	NO	N/A
Copper	3100	110	N/A	YES	(2)	N/A
Lead	2.4	N/A	N/A	NO	NO

Mercury	<0.05	N/A	N/A	NO	NO
Molybdenum	<0.5	N/A	N/A	NO	N/A

Nickel	10	N/A	N/A	NO	N/A
Selenium	<0.5	N/A	N/A	NO	NO
Silver	<0.5	N/A	N/A	NO	NO

Thallium	<0.5	N/A	N/A	NO	N/A
Vanadium	32	N/A	N/A	NO	N/A
Zinc	65	N/A	N/A	NO	N/A

*PPM	or	mg/Kg;	†mg/L
(1)	Copper	-	STLC
(2)	Copper	–	TTLC	and	STLC

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Figure H1. Composite sampling locations of the Devil’s Kitchen East (Boardwalk)

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Figure H2. Composite sampling locations of the Devil’s Kitchen West (Bridge)

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Photo H1. The photo below shows the burn footprint conditions for the boardwalk.

Photo

H2.

The

photo

below

shows

the

overview

the

bridge

with

the

creek

underneath

running

from

right

left.

The

burn

footprint

the

foreground.

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I) Boardwalks, Drake’s Lake Trail

Date of site assessment: October 9, 2022

Approximate Coordinates: 40.438169, -121.412184 (Boardwalk-1)

40.437932, -121.411136 (Boardwalk-2)

40.438960, -121.405091 (Boardwalk-3)

40.441944, -121.404759 (Boardwalk-4)

40.442196, -121.406238 (Boardwalk-5)

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Accessibility:

This

trail

may

reached

foot

from

Drakesbad

reach

the

separate

boardwalks.

Distances

between

the

boardwalks

can

seen

below

the

AllTrails

map.

The

trailhead

approximately

100

feet

West

the

Drakesbad

lodge.

After

crossing

the

boardwalk

across

the

meadow,

there

intersection

with

section

trail

that

connects

the

PCT

the

East

(left).

Two

the

boardwalk

sections

and

are

this

section

trail.

After

reaching

the

PCT,

short

distance

the

South

the

PCT

the

connection

Drake’s

Lake

trail,

containing

Boardwalks

1-3.

Boardwalk

near

the

intersection

leading

the

Devil’s

Kitchen

near

the

West

part

the

Drake’s

Lake

trail

(before

begins

climb

higher

elevations).

All

boardwalks

are

located

designated

wilderness.

Trail Map (Drake’s Lake Trail)

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Notes and Comments:

• The	composite	sampling	locations	are	shown	in	Figures	I1-I5,	below.
• No	other	suspect	materials	besides	burned	(mostly	charcoal)	suspected	pressure

treated

wood

were

observed

(See

Photos

I1-I5,

below).

• A

watershed

crossing

that

was

left

uncovered

(with

neither

tarp

nor

yellow

tape)

was

not

sampled.

This

was

single

log

with

nails

found

within

approximately

feet

from

trail

marker

the

PCT

(indicating

0.6

miles

Boiling

Springs

Lake

and

0.5

miles

Drakesbad).

• Boardwalks	1	and	2	were	composited	into	waste	characterization	Lab	sample	WI-1;
Boardwalk	three	was	WI-2;	Boardwalks	4	and	5	were	composited	into	waste
characterization	sample	WI-3.

• Separate	background	samples	were	collected	for	the	boardwalk	areas.
• The	ash	samples	associated	with	higher	elevations	(Boardwalks	1-3)	were	relatively

dry.

The

ash

samples

associated

with

Boardwalks

and

were

moist.

The

ash

fragments

appeared

contained

the

burn

footprint.

Waste Characterization Data/Results (I. Drake’s Lake Boardwalks-Tables Below):

• California	Hazardous	Waste	for	Arsenic	Copper	(Boardwalks	4	and	5)
• California	Hazardous	Waste	for	Copper	(Boardwalks	1	and	2)

Maximum Observed Levels of Other Contaminants (Drake’s Lake Boardwalks):

• Hg

(Cold

Vapor

AA)

0.30

ppm

• Dioxins

0.12

ppt

TEQ

• Asbestos

<0.25%

• TPH:

ppm

gasoline,

600

ppm

diesel,

1,200

ppm

motor

oil

(>Tier

SSL,

See

§V)

WI-1 (Boardwalks 1 and 2, Drake's Lake Trail)

Analytes TTLC Result* STLC† TCLP†

CALIFORNIA

HAZ?

RCRA

HAZ?

Antimony	<1.0	N/A	N/A	NO	N/A
Arsenic	<1.0	N/A	N/A	NO	NO
Barium	39	N/A	N/A	NO	NO

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Beryllium	<1.0	N/A	N/A	NO	N/A
Cadmium	<1.0	N/A	N/A	NO	NO
Chromium	<1.0	N/A	N/A	NO	NO
Cobalt	<1.0	N/A	N/A	NO	N/A
Copper	700	69	N/A	YES	(1)	N/A
Lead	1.4	N/A	N/A	NO	NO

Mercury	<0.1	N/A	N/A	NO	NO
Molybdenum	<1.0	N/A	N/A	NO	N/A

Nickel	2.8	N/A	N/A	NO	N/A
Selenium	<1.0	N/A	N/A	NO	NO
Silver	<1.0	N/A	N/A	NO	NO

Thallium	<1.0	N/A	N/A	NO	N/A
Vanadium	4.3	N/A	N/A	NO	N/A
Zinc	27	N/A	N/A	NO	N/A

WI-2 (Boardwalk 3, Drake's Lake Trail)

Analytes TTLC Result* STLC** TCLP**

CALIFORNIA

HAZ?

RCRA

HAZ?

Antimony	<0.5	N/A	N/A	NO	N/A
Arsenic	<0.5	N/A	N/A	NO	NO
Barium	15	N/A	N/A	NO	NO

This is the start of the file's text. The full file is on GovTribe.

File details come from the government source that posted it. Updated May 6, 2024.